Pleurotus cystidiosus, also known as abalone mushroom and maple oyster mushroom, is an edible species of fungus in the family Pleurotaceae, described as new to science by mycologist Orson K. Miller Jr. in 1969. It can be cultivated, with spores and growing kits being available commercially. Antromycopsis macrocarpa (or A. broussonetiae) is the anamorphic form of this species.

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